Answer:
18 inches
Step-by-step explanation:
Given
--- radius
--- distance between chord and the center of the circle
Required
The chord length
See attachment for illustration
First, calculate distance AX using Pythagoras theorem.
This gives:
Collect like terms
Take square roots of both sides
AB is then calculated as:
Where:
So:
Answer: B
Step-by-step explanation:
The answer is A; 25x²-9
<span><span>(<span><span>5x</span>+3</span>)</span><span>(<span><span>5x</span>−3</span>)</span></span><span>=<span><span>(<span><span>5x</span>+3</span>)</span><span>(<span><span>5x</span>+<span>−3</span></span>)</span></span></span><span>=<span><span><span><span><span>(<span>5x</span>)</span><span>(<span>5x</span>)</span></span>+<span><span>(<span>5x</span>)</span><span>(<span>−3</span>)</span></span></span>+<span><span>(3)</span><span>(<span>5x</span>)</span></span></span>+<span><span>(3)</span><span>(<span>−3</span>)</span></span></span></span><span>=<span><span><span><span>25<span>x</span></span></span></span></span></span>²−15x+15x−9<span>=<span><span>25<span>x</span></span></span></span>²−9
The what theorem I have never heard of that
Explanation
